How to export your Ocean Modifier Mesh and Animation to Unity? | Blender v2.80.72
I used the official Blender 2.8 release and it works fine.

What to do:


Select your 'Ocean Object' and press ctrl + a to apply the scale.
With your object selected click file -> export -> Lightwave Point Cache (.mdd)
Save the mdd file.
Apply your ocean modifier
With the object selected click import and import your mdd file again.


The whole process takes only seconds now.